json tobean

 Insert a code chip here 
import java.io.*;
import java.net.ServerSocket;
import java.net.Socket;
import java.util.ArrayList;
import java.util.Date;
import static Code_conversion.bytesToHexString;

public class Receiving_message_Server extends Thread {
    
    public static ArrayList<Socket> sockets = new ArrayList<Socket>();
    private Socket_data_service socket_data_service = new Socket_data_serviceimpl();
    private Socket server;
    private ServerSocket serverSocket;

    public Receiving_message_Server() {
    
    }
    public Receiving_message_Server(int port) throws IOException {
    
        serverSocket = new ServerSocket(port);
    }
    public void run() {
    
        while (true) {
    
            try {
    
                System.out.println(" Waiting for remote connection .....");
                server = serverSocket.accept(); //  Blocking the listening port waiting for the requested connection 
                sockets.add(server);  
                System.out.println(" Remote host address ：" + server.getRemoteSocketAddress());
                System.out.println(" Connection time ：" + new Date());
                InputStream in = server.getInputStream(); //  Get the stream sent by the client 
                BufferedInputStream bis = new BufferedInputStream(in);  //   Stream store buffer 
                DataOutputStream dos = new DataOutputStream(out); //  Get buffer stream data  
                byte[] bytes = new byte[1]; //  Read one at a time byte
                String ret = "";
                while (dis.read(bytes) != -1) {
    
                    ret += bytesToHexString(bytes) + " ";  // Call byte conversion 16 Base string method 
                    if (dis.available() == 0) {
     // A request 
                        System.out.println(" Received message data ： " + ret);
                        ret = "";
                    }
                }
                in.close();
                dos.close();
                bis.close();
                server.close();  //  Close the connection 
            } catch (IOException e) {
    
                e.printStackTrace();
                break;
            }
        }
    }
    public static void main(String[] args) {
    
        int port = 8888;  //  Listening port 
        try {
    
            Thread t = new Receiving_message_Server(port);  //  Thread initialization 
            t.start();
        } catch (IOException e) {
    
            e.printStackTrace();
        }
    ｝
}

 Insert a code chip here 
public class Code_conversion {
    

    /**
     *  Binary conversion 16 Base string 
     * @param bytes
     * @return
     */
    public static String bytesToHexString(byte[] bytes) {
    
        StringBuilder sb = new StringBuilder();
        for (int i = 0; i < bytes.length; i++) {
    
            String hex = Integer.toHexString(0xFF & bytes[i]);
            if (hex.length() == 1) {
    
                sb.append('0');
            }
            sb.append(hex);
        }
        return sb.toString();
    }


    /***
     *  16 Binary string conversion 
     * @param hexStr
     * @return
     */
    public static byte[] parseHexStr2Byte(String hexStr) {
    
        if (hexStr.length() < 1)
            return null;
        byte[] result = new byte[hexStr.length() / 2];
        for (int i = 0; i < hexStr.length() / 2; i++) {
    
            int high = Integer.parseInt(hexStr.substring(i * 2, i * 2 + 1), 16);
            int low = Integer.parseInt(hexStr.substring(i * 2 + 1, i * 2 + 2), 16);
            result[i] = (byte) (high * 16 + low);
        }
        return result;
    }
}